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CN109072021A - Double-faced pressure-sensitive adhesive sheet and laminate - Google Patents

Double-faced pressure-sensitive adhesive sheet and laminate Download PDF

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Publication number
CN109072021A
CN109072021A CN201780025807.2A CN201780025807A CN109072021A CN 109072021 A CN109072021 A CN 109072021A CN 201780025807 A CN201780025807 A CN 201780025807A CN 109072021 A CN109072021 A CN 109072021A
Authority
CN
China
Prior art keywords
layer
adhering agent
agent layer
methyl
double
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201780025807.2A
Other languages
Chinese (zh)
Other versions
CN109072021B (en
Inventor
伊藤万智
畑章浩
清水滋吕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Oji Paper Co Ltd
Original Assignee
Oji Paper Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oji Paper Co Ltd filed Critical Oji Paper Co Ltd
Publication of CN109072021A publication Critical patent/CN109072021A/en
Application granted granted Critical
Publication of CN109072021B publication Critical patent/CN109072021B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

The issue of the present invention is to provide the double-faced pressure-sensitive adhesive sheets for having both scale traceability and resistance to ease gas both sides.The present invention is double-faced pressure-sensitive adhesive sheet, comprising: substrate layer of the light transmittance of wavelength 370nm up to 50% or more, the 1st adhering agent layer curable after being set to a surface side of substrate layer and being bonded and be set to substrate layer another surface side and 5 μm of thickness or more and 75 μm of the 2nd adhering agent layers below.

Description

Double-faced pressure-sensitive adhesive sheet and laminate
Technical field
The present invention is about double-faced pressure-sensitive adhesive sheet and laminate.
Background technique
In recent years, the display devices such as liquid crystal display (LCD), the display with Trackpad etc. are widely used in various fields The trend for the input unit that device is applied in combination.These display devices, input unit manufacture in, in fitting optical component With on the way use transparent double-faced pressure-sensitive adhesive sheet.For example, be fitted on transparent supporting body ITO (Indium Tin Oxide, Tin indium oxide) etc. transparent electrode film 2 components of conductive member and cover glass, Trackpad and display device etc., and be widely used Double-faced pressure-sensitive adhesive sheet.
Such as portable telephone terminal equipments such as smart phone etc., it is implemented for circuit inside machine etc. can be hidden outer Frame printing.Decorative layer is arranged in the cover board back side peripheral part (cover panel) mostly, in cover board back side in such situation The adhering agent layer being bonded requires the property that can track decorative layer scale.In addition, working as the case where cover board is resin, covering The adhering agent layer of backboard surface side fitting must have the adhesion strength that can fight the gas gas pressure that escapes produced by resin panel or solidifying Poly- power.According to this, the case where scale traceability and resistance to ease gas both sides are had while required for adhering agent layer, reaches these projects Means motion have using ultraviolet light irradiation carry out rear curing type adhering agent layer (such as patent document 1 etc.).
Furthermore patent document 2 discloses: having transparent vapor resistance between the 1st pressure sensitivity adhesive layer and the 2nd pressure sensitivity adhesive layer The double-faced pressure-sensitive adhesive sheet of barrier layer.Herein, it is set in for by by the storage modulus of the 1st pressure sensitivity adhesive layer and the 2nd pressure sensitivity adhesive layer In given area, study the adhesive sheet for being suitable for glass plate fitting is provided.
[prior art document]
[patent document]
No. 2012/032995 bulletin of [patent document 1] International Publication No.
No. 3878386 bulletins of [patent document 2] Japanese Patent No..
Summary of the invention
(problems to be solved by the invention)
After using ultraviolet light documented by patent document 1 when curing type adhering agent layer, fitting purposes is only limitted to penetrate purple The adherend of outside line, which is bonded, to be used.Such as after using ultraviolet light recorded in patent document 1 when curing type adhering agent layer, in adhesive sheet Two-sided set both adherends must be such that ultraviolet light penetrates, and cause fitting purposes limited.
Furthermore adhesive sheet documented by patent document 2, the research of people etc. is learnt according to the present invention, scale traceability is had The situation of insufficient, resistance to ease gas deficiency.
The inventors of the present invention are the project for solving such known technology herein, can also be suitable for purple for being designed to provide The double-faced pressure-sensitive adhesive sheet for the adherend fitting that outside line will not penetrate has both the double-sided adhesive of scale traceability and resistance to ease gas both sides property Piece studied.
(technological means for solving project)
It is deeply being studied intensively to solve the above subject as a result, the inventors of the present invention's discovery is by the 1st adhering agent layer of lamination, substrate Layer and the 2nd adhering agent layer are penetrated according in double-faced pressure-sensitive adhesive sheet made of the sequential laminating by the ultraviolet light for improving substrate layer Rate and by with set physical property the 1st adhering agent layer and the 2nd adhering agent layer across substrate layer carry out lamination, can be had both The double-faced pressure-sensitive adhesive sheet of scale traceability and resistance to ease gas both sides property.The inventors of the present invention have found that such double-faced pressure-sensitive adhesive sheet is also applicable In the fitting for the adherend that ultraviolet light will not penetrate, the present invention is completed then.
Specifically, the present invention has following composition.
[1] a kind of double-faced pressure-sensitive adhesive sheet, comprising: substrate layer of the light transmittance of wavelength 370nm up to 50% or more is set to substrate One surface side of layer and after being bonded curable the 1st adhering agent layer and be set to substrate layer another surface side and 5 μm of thickness or more And 75 μm of the 2nd adhering agent layers below.
[2] double-faced pressure-sensitive adhesive sheet as documented by [1], wherein the 1st adhering agent layer is active energy ray curing ability Adhering agent layer.
[3] double-faced pressure-sensitive adhesive sheet as documented by any one of [1] or [2], wherein the thickness of the 1st adhering agent layer is 50 μm Above and 250 μm or less.
[4] double-faced pressure-sensitive adhesive sheet as documented by any one of [1]~[3], wherein the 1st adhering agent layer fits in a surface On a part have decorative layer Dicoration base material layer.
[5] double-faced pressure-sensitive adhesive sheet as documented by any one of [1]~[4], wherein the 2nd adhering agent layer fits in display dress It sets.
[6] a kind of laminate, has: double-faced pressure-sensitive adhesive sheet documented by any one of [1]~[5], on the 1st adhering agent layer The Dicoration base material layer of lamination and on the 2nd adhering agent layer lamination display device；Wherein, Dicoration base material layer is on a surface A part there is decorative layer, and be bonded with the face of decorative layer with the 1st adhering agent layer.
[7] laminate as documented by [6], wherein further there is the 3rd adhering agent layer and surface coating, filling Adoring has the 3rd adhering agent layer on substrate layer, and has surface coating on the 3rd adhering agent layer.
[8] a kind of manufacturing method of laminate, comprising:
The 1st adhering agent layer for making double-faced pressure-sensitive adhesive sheet recorded in any one of [1]~[5], is contacted with one on a surface Part has the face of the decorative layer side of the Dicoration base material layer of decorative layer, irradiates active energy from the 2nd adhering agent layer side in this case Amount ray, and the step of the 1st adhering agent layer is fully cured；And
In the step of being bonded display device on the 2nd adhering agent layer.
Invention effect
It can get the double-faced pressure-sensitive adhesive sheet for having both scale traceability and resistance to ease gas both sides property according to the present invention.Of the invention Double-faced pressure-sensitive adhesive sheet can also be effectively used in the fitting for the adherend that ultraviolet light will not penetrate.
Detailed description of the invention
Fig. 1 is the schematic sectional view for illustrating a mode of double-faced pressure-sensitive adhesive sheet of the invention.
Fig. 2 is to illustrate that the outline of the composition of the laminate constituted using double-faced pressure-sensitive adhesive sheet fitting adherend of the invention is cutd open View.
Fig. 3 is the diagrammatic sectional view for illustrating the composition of the laminate constituted using double-faced pressure-sensitive adhesive sheet of the present invention fitting adherend Figure.
Specific embodiment
Hereinafter, the present invention is described in detail for needle.The explanation of recorded constitutive requirements below, sometimes according to representativeness Embodiment, concrete example carry out, but the present invention is not limited merely to such embodiment.
(double-faced pressure-sensitive adhesive sheet)
The present invention relates to the one sides for including substrate layer up to 50% or more of the light transmittance of wavelength 370nm, being set to substrate layer Side and after being bonded curable the 1st adhering agent layer and be set to substrate layer another surface side and 5 μm of thickness or more and 75 μm with Under the 2nd adhering agent layer double-faced pressure-sensitive adhesive sheet.
Double-faced pressure-sensitive adhesive sheet of the invention is because have above-mentioned composition, thus have both scale traceability and resistance to ease gas both sides' Property.In double-faced pressure-sensitive adhesive sheet of the invention, the 1st adhering agent layer is curable adhering agent layer after fitting in adherend, In soft semi-cured state before fitting.In this case, because the 1st adhering agent layer side is bonded to the quilt with sag and swell Viscous object side, thus the scale of bump can be tracked easily.Then, active energy beam is implemented by from the 2nd adhering agent layer side Irradiation, and carry out after solidify (formal solidification), make the 1st adhering agent layer presentation state is fully cured, can be adhered to securely Adherend, and the excellent gas of resistance to ease can be played.In addition, the present invention is by the 1st adhering agent layer and the 2nd adhering agent layer across substrate Layer carries out lamination, by being set as such composition, even if after the 1st adhering agent layer is fully cured, still using the 2nd soft sticker Layer plays good wetability (adhesion) to adherend.
In addition, " semi-cured state " so-called in this specification, refers to before adhering agent layer is fitted in adherend, utilize Heat or active energy beam make the cured state of a portion, refer to it is rear solidify (formal solidification) before soft condition.This Outside, so-called " semi-cured state " refers to that after after solidification (formal solidification), dynamic viscoelastic becomes 1.5 times or more of state.It should Dynamic viscoelastic is preferably 1.5 times or more and 1000 times or less, is more preferably 2 times or more and 100 times or less.The present invention is solid half Under change state, the dynamic viscoelastic of adhering agent layer is preferably 1.0 × 106It Pa or less, is more preferably 8.0 × 105Pa or less, spy It You Xuanwei 5.0 × 105Pa or less.So-called " (formal solidification) state is fully cured " refers to the adhering agent layer to semi-cured state Active energy beam is irradiated, adhering agent layer further cured state is made.
Fig. 1 is the schematic sectional view for illustrating a mode of double-faced pressure-sensitive adhesive sheet of the invention.As shown in Figure 1, double-faced pressure-sensitive adhesive sheet 100 have substrate layer 10.Moreover, double-faced pressure-sensitive adhesive sheet 100 has the 1st adhering agent layer 12 in a surface side of substrate layer 10, in substrate Another surface side of layer 10 has the 2nd adhering agent layer 14.1st adhering agent layer 12 has that fit in after adherend can cured property Matter, the thickness of the 2nd adhering agent layer 14 are 5 μm or more and 75 μm or less.
The thickness of double-faced pressure-sensitive adhesive sheet entirety of the present invention is preferably 50 μm or more, is more preferably 100 μm or more, is further preferred It is 150 μm or more.In addition, the thickness of double-faced pressure-sensitive adhesive sheet entirety is preferably 1mm or less, more preferably 0.5mm or less.
It is preferable to use the fittings of the adherend in tool scale for double-faced pressure-sensitive adhesive sheet of the present invention.This situation, the 1st adhering agent layer are pasted On the face together in adherend with scale.Adherend with scale can for example enumerate a part on a surface with decorative layer Dicoration base material layer etc., the 1st adhering agent layer is bonded on the face of the side equipped with decorative layer of such Dicoration base material layer.Because the It is preferable to use in such being glued with scale for the excellent thus of the invention double-faced pressure-sensitive adhesive sheet of the scale traceability of 1 adhering agent layer Object is bonded purposes.
Dicoration base material layer with decorative layer can be made of resin substrate layer.Because of the gas of resistance to ease of double-faced pressure-sensitive adhesive sheet of the present invention It is excellent, even if thus Dicoration base material layer the case where being resin layer, still can inhibit gassing situation after fitting.
In double-faced pressure-sensitive adhesive sheet of the present invention, the 2nd adhering agent layer preferably fits in optical component.Optical component can for example be enumerated aobvious Showing device etc., and display device is preferred: liquid crystal display device (liquid crystal display panel), plasm display device (plasma Display panel), organic electroluminescence display device and method of manufacturing same (organic EL panel) etc..
(substrate layer)
Double-faced pressure-sensitive adhesive sheet of the present invention includes substrate layer.Substrate layer is set between the 1st adhering agent layer and the 2nd adhering agent layer, Has the function of monomer component for preventing sticker etc. from the 2nd adhering agent layer of the 1st adhering agent layer migration.By substrate is arranged according to this Layer, can improve double-faced pressure-sensitive adhesive sheet scale traceability and resistance to ease gas.
Substrate layer includes resin.Resin contained in substrate layer can for example be enumerated: polyvinyl resin, acrylic resin etc. are poly- Olefin resin；Polyethylene terephthalate resin, polyethylene naphthalate resin, polybutylene terephthalate resin etc. Polyester resin；Corvic, polystyrene resin, polyurethane resin, polycarbonate resin, polyamide, polyamides are sub- The various synthetic resin such as polyimide resin, fluorine resin, cyclic olefin polymerization resin.Wherein, it is preferable to use from poly terephthalic acid second Selected among diester resin (PET resin) and cyclic olefin polymerization resin (COP resin) it is at least one kind of, particularly preferably using poly- Ethylene terephthalate resin (PET resin).
As long as the light transmittance of the wavelength 370nm of substrate layer up to 50% or more, preferably 60% or more, more preferable 70% with Above, further preferred 80% or more.By by the setting of the light transmittance of the wavelength 370nm of substrate layer within the above range, using from 2nd adhering agent layer side irradiation active energy beam can carry out the rear solidification of the 1st adhering agent layer, also can be in the 1st adhering agent layer side The adherend that lamination ultraviolet light will not penetrate.
The light transmittance of the wavelength 370nm of substrate layer is using UV, visible light sub-ray spectrometer (pattern: Solid- Spec3700, Shimadzu Seisakusho Ltd.'s corporation) measurement value.
Preferably 20 μm or more, more preferable 40 μm of the thickness of substrate layer or more, further preferred 50 μm or more.In addition, substrate Preferably 500 μm or less, more preferable 400 μm of thickness or less, further preferred 300 μm or less of layer.
(the 1st adhering agent layer)
1st adhering agent layer is the adhering agent layer being arranged in a surface side of substrate layer.1st adhering agent layer have fitted in by It can cured property after viscous object.That is, the sticker of the more preferably active energy ray curing ability of the 1st adhering agent layer Layer.
Furthermore the adhering agent layer of the 1st adhering agent layer preferably active energy ray curing ability.In this specification, tool The adhering agent layer of active energy ray-curable ability is also referred to as " double curing type adhering agent layers ".Herein, active energy is penetrated The adhering agent layer of line ability to cure is to carry out cured adhering agent layer according to the multistage, such as by having Thermocurable and active-energy The adhesion agent composition of ray-curable both sides is formed by adhering agent layer.In the present invention, the 1st adhering agent layer preferably is carried out the 1st The heat cure in stage, and can be solidified in the 2nd stage using active-energy.In double-faced pressure-sensitive adhesive sheet of the invention, the 1st adhering agent layer It is preferred that carrying out lamination under semi-cured state after heat cure, preferably the 1st adhering agent layer, which fits in, just utilizes activity after adherend Energy is solidified.That is, in double-faced pressure-sensitive adhesive sheet of the invention, the 1st adhering agent layer preferably active energy ray curing ability. In addition, the curing schedule that the 1st adhering agent layer fits in after adherend also can be multi-stage curing step.
Preferably 50 μm or more, more preferred 75 μm of the thickness of 1st adhering agent layer or more, further preferred 90 μm or more.This Outside, preferably 250 μm or less, more preferred 200 μm of the thickness of the 1st adhering agent layer or less, further preferred 150 μm or less.By Within the above range by the thickness setting of the 1st adhering agent layer, scale traceability can more effectively be improved.In addition, can be improved double The gas of resistance to ease of face adhesive sheet.
As long as the 1st adhering agent layer has the adhering agent layer of rear ability to cure.Such adhering agent layer for example can be double by (a) Curing type adhesion agent composition or (b) adhesion agent composition of the crosslinking agent of type containing dehydrogenation is formed.In the present invention, except double curing types Except adhesion agent composition, even with the crosslinking agent of type containing dehydrogenation adhesion agent composition the case where, still can get solid after having The adhering agent layer of change ability.This situation is also that can implement post cure step by active energy beam irradiation.
((a) double curing type adhesion agent compositions)
1st adhering agent layer is preferably formed by double curing type adhesion agent compositions.Double curing type adhesion agent compositions preferably contain Have: containing non-crosslinked property (methyl) acrylic ester unit (a1) and with the acrylic based monomers unit (a2) of bridging property functional group Matrix polymer (A), monomer (B), using heat will with matrix polymer (A) aitiogenic crosslinking agent (C), by activity Energy-ray irradiation just makes monomer (B) start to carry out the polymerization initiator (D) and solvent (E) of polymerization reaction.
In addition, so-called " (methyl) acrylate " refers to and covers " acrylate " and " methacrylic acid in this specification Both esters ", so-called " (methyl) acrylic acid ", which refers to, covers both " acrylic acid " and " methacrylic acid ".
< matrix polymer (A) >
Matrix polymer (A) contains: non-crosslinked property (methyl) acrylic ester unit (a1) and with bridging property functional group's Acrylic monomer units (a2).Matrix polymer preferably has not the transparent of the visual degree reduced for causing display device Property.In addition, " unit " is to constitute polymeric repetitive unit (monomeric unit) in this specification.
Non-crosslinked property (methyl) acrylic ester unit (a1) is the repetitive unit as derived from (methyl) alkyl acrylate. (methyl) alkyl acrylate can be enumerated: (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) n-butyl acrylate, (methyl) isobutyl acrylate, (methyl) tert-butyl acrylate, (methyl) acrylic acid n-pentyl ester, (methyl) the just own ester of acrylic acid, (methyl) acrylic acid-2-ethyl caproite, (methyl) acrylic acid are just Monooctyl ester, (methyl) Isooctyl acrylate monomer, the positive nonyl ester of (methyl) acrylic acid, the different nonyl ester of (methyl) acrylic acid, (methyl) acrylic acid are just Last of the ten Heavenly stems ester, (methyl) isodecyl acrylate, (methyl) acrylic acid n-undecane base ester, the positive last of the ten Heavenly stems ester of (methyl) acrylic acid, (methyl) third Olefin(e) acid stearyl ester, (methyl) methoxyethyl acrylate, (methyl) ethoxyethyl acrylate, (methyl) cyclohexyl acrylate, (methyl) benzyl acrylate etc..These can be used alone a kind, can also be used in combination of two or more.
Among above-mentioned (methyl) alkyl acrylate, just from the viewpoint for improving adherence, preferably from (methyl) acrylic acid first Ester, (methyl) n-butyl acrylate, select among (methyl) acrylic acid-2-ethyl caproite it is at least one kind of.
Acrylic monomer units (a2) with bridging property functional group can enumerate the list of the monomeric unit of hydroxyl, amino-contained Body unit, the monomeric unit containing glycidyl, carboxylic monomeric unit etc..These monomeric units can be a kind, also can be 2 kinds More than.
The monomeric unit of hydroxyl is the repetitive unit as derived from the monomer of hydroxyl.The monomer of hydroxyl can for example be lifted Out: (methyl) acrylic acid -2- hydroxyl ethyl ester, (methyl) acrylic acid -4- hydroxy butyl ester, (methyl) 2-hydroxypropyl acrylate etc. (methyl) Acrylic acid hydroxy alkyl ester；[(mono-, di- or poly-) stretches alkyl diol to (methyl) acrylic acid list (binaryglycol ester) etc. (methyl) acrylic acid Ester]；(methyl) acryliclactones such as (methyl) acrylic acid list caprolactone.
The monomeric unit of amino-contained can for example be enumerated: (methyl) acrylamide, allylamine etc. are spread out by the monomer of amino-contained Raw repetitive unit.
Monomeric unit containing glycidyl can for example enumerate (methyl) Glycidyl Acrylate etc. by the list containing glycidyl Repetitive unit derived from body.
Carboxylic monomeric unit can for example be enumerated: acrylic acid, methacrylic acid.
Crosslinkable acrylic monomeric unit (a2) amount in matrix polymer (A), preferably 0.01 mass % or more and 40 mass % or less.If the amount of crosslinkable acrylic monomeric unit (a2) reaches the lower limit value of above range or more, just sufficiently With for maintain semi-cured state when necessary bridging property, and if in the upper limit value of above range hereinafter, can maintain necessary Adhesion physical property.
Matrix polymer (A) optionally also containing non-crosslinked property (methyl) acrylic ester unit (a1) and can have bridging property Other monomers unit other than the acrylic monomer units (a2) of functional group.As long as other monomers can be with non-crosslinked property (methyl) Acrylate and acrylic monomers with bridging property functional group carry out combined polymerization, can be such as: (methyl) acrylonitrile, acetic acid Vinyl acetate, styrene, vinyl chloride, ethylene Pyrrolizidine ketone, vinylpyridine etc..Any monomeric unit of matrix polymer (A) contains Measure preferably 20 mass % or less.
The weight average molecular weight preferably 100,000 or more and 2,000,000 or less of matrix polymer (A).It is set by by weight average molecular weight Within the above range, the semi-cured state of the 1st adhering agent layer can be maintained, and can ensure that sufficient scale traceability.In addition, base The weight average molecular weight of matter polymer (A) is that the value before crosslinking is implemented using crosslinking agent.Weight average molecular weight is to utilize size exclusion color Layer analysis method (SEC) measurement, the value acquired according to polystyrene benchmark.Matrix polymer (A) can be used commercially available object, benefit also can be used Winner is closed with known method.
The weight average molecular weight of matrix polymer (A) is also measured using gel infiltration chromatograph (GPC).This feelings The determination condition of condition, gel infiltration chromatograph (GPC) is as follows.
Solvent: tetrahydrofuran (THF)
Tubing string: Shodex KF801, KF803L, KF800L, KF800D (making 4 connections by Showa electrician (stock) to use)
Tubing string temperature: 40 DEG C
Sample concentration: 0.5 mass %
Detector: RI-2031plus (JASCO system)
Pump: RI-2080plus (JASCO system)
Flow (flow velocity): 0.8ml/min
Injection rate: 10 μ l
Calibration curve: use is by standard polystyren Shodex standard polystyrene (Showa electrician (stock) system) Mw Calibration curve made by=1320~2,500,000 10 samples.
< monomer (B) >
Monomer (B) preferably comprises the mono-functional monomers (B1) at least having 1 polymerism unsaturated group and at least tool 2 One at least in the multiple functional radical monomer (B2) of the above polymerism unsaturated group.Monomer (B) preferably comprises monofunctional Any one of monomer (B1) or multiple functional radical monomer (B2), also can mono-functional monomers (B1) and multiple functional radical monomer (B2) it is double Fang Jun contains.
By monomer (B) is contained, when making adhesion agent composition carry out heat cure, the adhering agent layer of thermosetting compound is in half Solid state, and can active energy ray curing ability.
The base of the polymerism unsaturated group preferably double bond containing ethylene, such as can enumerate: (methyl) acryloyl group, vinyl Deng.Wherein particularly preferred (methyl) acryloyl group.
Mono-functional monomers (B1) are preferably from (methyl) amyl acrylate, (methyl) Hexyl 2-propenoate, (methyl) acrylic acid Heptyl ester, (methyl) n-octyl, (methyl) Isooctyl acrylate monomer, the positive nonyl ester of (methyl) acrylic acid, (methyl) acrylic acid are different Nonyl ester, the positive last of the ten Heavenly stems ester of (methyl) acrylic acid, (methyl) isodecyl acrylate, (methyl) acrylic acid n-undecane base ester, (methyl) third Olefin(e) acid lauryl, (methyl) stearyl acrylate, (methyl) isostearyl acrylate, (methyl) isobornyl acrylate, (first Base) select among acrylic acid-2-ethyl caproite etc. it is at least one kind of.
Among these, particularly preferably from 25 DEG C of fusing point (methyl) amyl acrylates below, (methyl) Hexyl 2-propenoate, (methyl) heptylacrylate, (methyl) n-octyl, (methyl) Isooctyl acrylate monomer, the positive nonyl ester of (methyl) acrylic acid, (first Base) the different nonyl ester of acrylic acid, the positive last of the ten Heavenly stems ester of (methyl) acrylic acid, (methyl) isodecyl acrylate, (methyl) acrylic acid n-undecane base Ester, (methyl) lauryl acrylate, (methyl) isostearyl acrylate, (methyl) isobornyl acrylate, (methyl) acrylic acid- It is selected among 2- ethylhexyl at least one kind of.
Multiple functional radical monomer (B2) can for example be enumerated: two (methyl) acrylic acid glycol esters, two (methyl) propylene triethylenetetraminehexaacetic acids Diol ester, two (methyl) acrylic acid -1,3 butylene glycol ester, two (methyl) acrylic acid -1,4- butanediol esters, two (methyl) propylene Acid -1,9- nonanediol ester, diacrylate -1,6-HD ester, two (methyl) acrylic acid polybutadiene alcohol esters, two (methyl) acrylic acid Neopentyl glycol ester, two (methyl) acrylic acid tetraethylene glycol esters, two (methyl) acrylic acid tripropylene glycol esters, two (methyl) acrylic acid are poly- Propylene glycol ester, three (methyl) acrylic acid trihydroxy methyl propyl ester, three (methyl) acrylate, pentaerythritols, four (methyl) acrylic acid seasons (methyl) esters of acrylic acid of the polyalcohols such as Doutrate；Vinyl methacrylate etc..
In addition, monomer (B) does not preferably have and the reactive function of acrylic monomer units (a2) had functional group Base.Such as monomer (B) preferably has identical functional group's (such as hydroxyl) with acrylic monomer units (a2) or does not have function Base.
Monomer (B) be individually for wantonly a kind in mono-functional monomers (B1) or multiple functional radical monomer (B2) or also can and with 2 Kind or more mono-functional monomers (B1) and/or multiple functional radical monomer (B2).
In adhesion agent composition, monomer (B) amount cooperates composition, molecular weight and the crosslink density of matrix polymer (A) Deng the appropriate selection of row again, there is no particular limitation, relative to 100 mass parts of matrix polymer (A), more than preferably 5 mass parts And 150 below the mass.By by the amount setting of monomer (B), within the above range, can improve prevents scale traceability The performance for deformation occur, distorting, can improve processability.
< crosslinking agent (C) >
Crosslinking agent (C) can go again after the reactivity between bridging property functional group possessed by consideration and matrix polymer (A) Appropriate selection.Such as it can be from isocyanate compound, epoxide, oxazoline compound, aziridine cpd, metal-chelating It is selected in crosslinking agent known in compound, butylated melamines compound etc..Among these, just from bridging property functional group's Acrylic monomer units (a2) can be crosslinked viewpoint, preferred isocyanate compound, epoxide easily.Such as make containing hydroxyl The case where for bridging property functional group, more preferably uses isocyanate compound just from the viewpoint of hydroxyl reactive.
Isocyanate compound can be enumerated: toluene-2,4-diisocyanate, to stretch xylylene diisocyanate, hexa-methylene two different Cyanate, isophorone diisocyanate etc..
Epoxide can be enumerated: ethylene glycol Diglycidyl, polyethylene glycol Diglycidyl, propylene glycol diepoxy third Ether, polypropylene glycol Diglycidyl, glycerol Diglycidyl, neopentyl glycol Diglycidyl, 1,6-HD Diglycidyl, Bis- (N, the N- 2-glycidyl aminomethyl) hexamethylenes of four glycidyl dimethylphenylene diamines, 1,3-, trimethylolpropane polycyclic oxygen Propyl ether, the poly- glycidyl ethers of two glycerol, the poly- glycidyl ethers of polyglycereol, the poly- glycidyl ethers of D-sorbite etc..
The appropriate selection of row again such as adhesion physical property needed for crosslinking agent (C) the amount cooperation in adhesion agent composition, relative to 100 mass parts of matrix polymer (A), more than preferably 0.01 mass parts and 5 below the mass.
< polymerization initiator (D) >
Polymerization initiator (D) if using active energy beam irradiation, and can make monomer (B) start carry out polymerization reaction , the object such as known in Photoepolymerizationinitiater initiater can be used.
Herein, so-called " active energy beam ", which refers to, has quanta of energy person in electromagnetic wave or charged particle beam, can be such as: Ultraviolet light, electron beam, luminous ray, X-ray, ion beam etc..Wherein, just from the viewpoint of versatility, preferably ultraviolet light or electronics Beam, particularly preferred ultraviolet light.
Polymerization initiator (D) can be enumerated: acetophenone series initiators, benzoin ether series initiators, diphenylketone series initiators, Hydroxyalkyl phenones series initiators, thioxanthones series initiators, amine system initiator etc..
Acetophenone series initiators can specifically be enumerated: diethoxy acetophenone, benzyl dimethyl ketal etc..
Benzoin ether series initiators can specifically be enumerated: benzoin, benzoin methylether etc..
Diphenylketone series initiators can specifically be enumerated: diphenylketone, o-benzoyl yl benzoic acid methyl esters etc..
Hydroxyalkyl phenones series initiators can specifically be enumerated: 1- hydroxyl-cyclohexyl-phenyl -one etc..
Thioxanthones series initiators can specifically be enumerated: 2-isopropylthioxanthone, 2,4- dimethyl thioxanthone etc..
Amine system initiator can specifically be enumerated: triethanolamine, 4- mesitylenic acid ethyl ester etc..
Polymerization initiator (D) amount in adhesion agent composition, when cooperating monomer (B) amount, making to be fully cured The appropriate selection of row again such as active energy beam exposure.Specifically, relative to monomer (B) gross mass, preferably 0.05 mass % Above and 10 mass % or less.
< solvent (E) >
Solvent (E) is used to promote the coating adaptive of adhesion agent composition.Solvent (E) can for example be enumerated: hexane, heptan The hydro carbons such as alkane, octane, toluene, dimethylbenzene, ethylbenzene, hexamethylene, hexahydrotoluene；Methylene chloride, trichloroethanes, trichloro ethylene, The halogenated hydrocarbons such as tetrachloro-ethylene, dichloropropane；The alcohols such as methanol, ethyl alcohol, propyl alcohol, isopropanol, butanol, isobutanol, diacetone alcohol； The ethers such as diethyl ether, diisopropyl ether, dioxanes, tetrahydrofuran；Acetone, methyl ethyl ketone, methylisobutylketone, isophorone, cyclohexanone Equal ketones；The esters such as methyl acetate, ethyl acetate, butyl acetate, isobutyl acetate, amyl acetate, butyric acid ethyl ester；Ethylene glycol list Methyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, dihydroxypropane single-ether, propylene glycol monomethyl ether vinegar The polyalcohols such as acid esters and its derivative.
Solvent (E) does not preferably have polymerism unsaturated group and 25 DEG C of vapour pressures are higher than mono-functional monomers' (b1) Solvent.Without polymerism unsaturated group and 25 DEG C of vapour pressures are higher than the solvent of mono-functional monomers (b1), can enumerate: oneself Alkane, heptane, hexamethylene, benzene, toluene, ethyl alcohol, isopropanol, diisopropyl ether, tetrahydrofuran, acetone, methyl ethyl ketone, methylisobutylketone, Ethyl acetate etc..
< any ingredient >
Adhesion agent composition can further contain plasticizer.Plasticizer is preferably without functional group's acrylic polymer.Without official Can base acrylic polymer be: only by do not have it is acrylate-based other than the acrylic monomer units of functional group constitute polymerization Body；Or by do not have it is acrylate-based other than functional group acrylic monomer units, with do not have functional group non-propylene The constituted condensate of acid monomer units.Because no functional group's acrylic polymer will not generate crosslinking with matrix polymer (A), because And scale traceability can be improved when that will not impact to adhesion physical property.
Adhesion agent composition can also contain other compositions other than the above in the range of will not undermine effect of the present invention. Other compositions can enumerate the known ingredient as sticker additive.Such as: antioxidant, preventing metal corrosion agent, tackifiers, Light stabilizers such as silane coupling agent, the amine compound that is obstructed etc..
(adhesion agent composition of (b) type containing dehydrogenation crosslinking agent)
The adhesion agent composition of the crosslinking agent of type containing dehydrogenation is the sticker group for containing acrylic polymeric body as principal component Close object.So-called herein " principal component ", which refers to, contains the ingredient up to 50 mass % or more relative to adhesion agent composition gross mass.
Acrylic polymeric body it is preferable to use with non-crosslinked property (methyl) acrylic ester unit (a1) for principal component, and at it In containing with bridging property functional group acrylic monomer units (a2) copolymer.In this specification, " unit " is to constitute Polymeric repetitive unit (monomeric unit).
Non-crosslinked property (methyl) acrylic ester unit (a1) of acrylic polymeric body is constituted, such as can be enumerated: (methyl) Methyl acrylate, (methyl) ethyl acrylate, propyl (methyl) acrylate, (methyl) butyl acrylate, (methyl) acrylic acid Isobutyl ester, (methyl) acrylic acid-2-ethyl caproite, (methyl) 2-ethyl hexyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) propylene (methyl) alkyl acrylate monomers such as the different nonyl ester of acid, (methyl) lauryl acrylate, (methyl) isostearyl acrylate.These Optionally can also it be used in combination of two or more.
Acrylic based monomers unit (a2) with bridging property functional group can be enumerated: (methyl) acrylic acid, maleic acid, The carboxylic monomers such as maleic anhydride, itaconic acid, fumaric acid, fumaric acid acid anhydride；(methyl) acrylic acid -2- hydroxyl second The hydroxyls such as ester, (methyl) acrylic acid -4- hydroxy butyl ester, (methyl) acrylic acid -2- hydroxy butyl ester, polyethylene glycol (methyl) acrylate Monomer；(methyl) acrylamide, morpholinyl acrylamide, acrylic acid-N, TMSDMA N dimethylamine base ethyl ester, acrylic acid-N- tert-butylamine (methyl) acrylate of the amino-containeds such as base ethyl ester；Epoxy groups such as (methyl) Glycidyl Acrylate etc..These optionally also may be used It is used in combination of two or more.
The stereoscopic needs of acrylic polymeric can also contain non-crosslinked property (methyl) acrylic ester unit (a1) and tool bridging property Other monomers unit other than the acrylic monomer units (a2) of functional group.As long as other monomers can be with non-crosslinked property (methyl) third Olefin(e) acid ester and acrylic monomers with bridging property functional group carry out combined polymerization.Other monomers can for example be enumerated: (methyl) Acrylonitrile, vinylacetate, styrene, vinyl chloride, vinylpyrrolidone, vinylpyridine etc..
The weight average molecular weight of acrylic polymeric body preferably 100,000 or more and 2,000,000 or less, more preferable 300,000 or more and 150 Ten thousand or less.Within the above range, it can ensure sufficient durability and flexibility by by weight average molecular weight setting.In addition, third The polymeric weight average molecular weight of olefin(e) acid system is the value before being crosslinked using crosslinking agent.Weight average molecular weight is to utilize size exclusion color Layer analysis method (SEC) measurement, the value acquired according to polystyrene benchmark.In addition, the weight average molecular weight of acrylic polymeric body also may be used It is measured using gel infiltration chromatograph (GPC).
In polymeric acrylic acid system condensate, such as applicable solution polymerization process.Solution polymerization process can be enumerated: ionic polymerization Method, radical polymerization etc..Used solvent can for example be lifted at this time: tetrahydrofuran, chloroform, ethyl acetate, toluene, hexane, Acetone, methyl ethyl ketone etc..
The adhesion agent composition of the crosslinking agent of type containing dehydrogenation contains dehydrogenation type Photoepolymerizationinitiater initiater.Dehydrogenation type Photoepolymerizationinitiater initiater Such as it can lift: diphenylketone, benzoyl benzoic acid, benzoyl methyl benzoate, 4- phenyl diphenylketone, hydroxyl diphenyl Ketone, 3,3'- dimethyl -4- methoxyl group diphenylketone, 2,4,6- trimethyl diphenylketone, 4- methyldiphenyl base ketone, thioxanthones, 2- Clopenthixal ketone, 2- methyl thioxanthones, 2,4- dimethyl thioxanthone, isopropyl thioxanthone, camphorquinone, Dibenzosuberone, 2- ethyl Anthraquinone, 3,3', 4,4'- tetra- (tert-butyl peroxide carbonyl) diphenylketone, benzyl, 9,10- phenanthrenequione etc..Wherein, preferably hexichol Base ketone, methyldiphenyl base ketone, 2,4,6- trimethyl diphenylketone.
The adhesion agent composition of the crosslinking agent of type containing dehydrogenation is in addition to dehydrogenation type Photoepolymerizationinitiater initiater, and Shang Yike is containing crosslinking Agent.Other crosslinking agents can for example be lifted: isocyanate compound, epoxide, oxazoline compound, aziridine cpd, gold Belong to chelate compound, butylated melamines compound etc..
Dehydrogenation type Photoepolymerizationinitiater initiater amount in the adhesion agent composition of the crosslinking agent of type containing dehydrogenation, adhesion needed for cooperating The appropriate selection of row again such as physical property, there is no particular limitation, such as relative to 100 mass parts of acrylic polymeric body, and preferably 0.01 More than mass parts and 20 below the mass.
Solvent can also be contained in the adhesion agent composition of the crosslinking agent of type containing dehydrogenation.Solvent can for example be lifted: methanol, ethyl alcohol, different Propyl alcohol, acetone, methyl ethyl ketone, toluene, n-hexane, n-butanol, methylisobutylketone, espeleton, ethyl butyl ketone, cyclohexanone, acetic acid Ethyl ester, butyl acetate, propylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, N- methyl -2- Pyrrolizidine ketone Deng.These can be used alone a kind or more, can also be mixed with two or more.
In the adhesion agent composition of the crosslinking agent of type containing dehydrogenation, in the range of will not undermine effect of the present invention, can also it contain Other compositions than that described above.Other compositions can enumerate the known ingredient as sticker additive.Such as: it is anti-oxidant Light stabilizers such as agent, preventing metal corrosion agent, tackifiers, silane coupling agent, the amine compound that is obstructed etc..
(the 2nd adhering agent layer)
2nd adhering agent layer is the adhering agent layer for being set to another surface side of substrate layer.The thickness of 2nd adhering agent layer be 5 μm with It is upper and 75 μm or less.
As long as the thickness of the 2nd adhering agent layer is up to 5 μm or more, preferably 10 μm or more.In addition, the thickness of the 2nd adhering agent layer As long as degree is at 75 μm or less, preferably 60 μm or less, more preferable 50 μm or less.It is set by by the thickness of the 2nd adhering agent layer Within the above range, resistance to ease gas can be effectively improved.
2nd adhering agent layer is preferably formed by the 2nd adhesion agent composition that contained principal component is matrix polymer.Matrix is poly- Object is closed to preferably comprise from acrylic polymeric body, rubber-based polymeric body, silicon systems condensate, urethanes system condensate and gather It is selected among ester system condensate at least one kind of.Wherein, matrix polymer preferably comprises poly- from acrylic polymeric body, rubber series Selected among fit and silicon systems condensate it is at least one kind of, further preferably from acrylic polymeric body and rubber-based polymeric body it At least one kind of, the further preferably acrylic polymeric body of middle selection.
Other compositions contained in 2nd adhesion agent composition are same as other compositions contained in the 1st adhesion agent composition.
The thickness of 2nd adhering agent layer is preferably relatively thinner than the thickness of the 1st adhering agent layer.The thickness of 1st adhering agent layer is set as A, when the 2nd adhering agent layer thickness being set as B, preferably A > B, more preferable A > 1.5B, further preferred A > 2B.It is glued by by the 1st The thickness relationship of oxidant layer and the 2nd adhering agent layer be set as above-mentioned relation, can more effectively improve resistance to ease gas and scale traceability.
(double-faced pressure-sensitive adhesive sheet with stripping film)
The present invention also can about in at least one side of above-mentioned double-faced pressure-sensitive adhesive sheet, lamination stripping film with stripping film Double-faced pressure-sensitive adhesive sheet.Stripping film lamination all has lamination in at least one side of double-faced pressure-sensitive adhesive sheet, preferably the two-sided of double-faced pressure-sensitive adhesive sheet.
Stripping film is the sheet material that at least single side has release property.Stripping film can be enumerated: have stripping film substrate, with shelling The fissility laminated sheet of set peeling agent layer on single side from piece substrate；Or belong to low polar substrates polyethylene film, The polyolefin films such as polypropylene screen.
The stripping film of fissility laminated sheet uses stationery, polymeric membrane with substrate.The remover for constituting peeling agent layer can make With for example general add-on type or condensed type silicon systems remover, containing the compound of chain alkyl.It is particularly preferably higher using reactivity Add-on type silicon systems remover.
Silicon systems remover can specifically be enumerated: the BY24-4527 of TorayDow Corning Silicones corporation, SD-7220 etc.；KS-3600, KS-774, X62-2600 etc. of SHIN-ETSU HANTOTAI's chemical industry (stock) system.Furthermore it is preferred that also can be containing poly- There is SiO in silicon oxygen series stripping agent2Unit and (CH3)3SiO1/2Unit or CH2=CH (CH3)SiO1/2The organosilicon compound of unit Object, that is, polysilicone.The concrete example of polysilicone can be enumerated: TorayDow Corning Silicones corporation BY24-843, SD-7292, SHR-1404 etc.；KS-3800, X92-183 etc. of SHIN-ETSU HANTOTAI's chemical industry (stock) system.
Stripping film is that can be easily peeled off, preferably make wherein a stripping film from another stripping film be respectively provided with different removings Property.That is, if from the fissility of one of them, different from the fissility from another one, it can be easily only by higher fissility Stripping film is first removed.This situation adjusts a wherein stripping film and another stripping film as long as cooperation applying method, coating squence Fissility.
If be coated with adhesion agent composition on stripping film, known apparatus for coating can be used to implement.Apparatus for coating can for example be lifted: Knife type coater, Kohler coater, roll coater, bar coater, gravure coater, micro- gravure coater, stick leaf coating machine (rod Blade coater), lip type coating machine, die coater, leaching curtain coater etc..The usable such as heating furnace of the heating of film, Heating device known in infrared lamp etc. is implemented.
(manufacturing method of double-faced pressure-sensitive adhesive sheet)
The manufacturing method of double-faced pressure-sensitive adhesive sheet of the invention includes: to obtain the step of the 1st adhering agent layer curable after being bonded Suddenly；The step of obtaining 5 μm of thickness or more and 75 μm of 2 adhering agent layers below；Wavelength 370nm light transmittance up to 50% or more Substrate layer a surface side, be bonded 1 adhering agent layer the step of；And the 2nd adhering agent layer is bonded in another surface side of substrate layer The step of.
The step of obtaining 1 adhering agent layer is preferably the step of being coated with 1 adhesion agent composition on the 1st stripping film.1st Known apparatus for coating can be used to implement for the coating of adhesion agent composition.Apparatus for coating can for example be enumerated: knife type coater, air knife apply Cloth machine, roll coater, bar coater, gravure coater, micro- gravure coater, stick leaf coating machine, lip type coating machine, die coater, Drench curtain coater etc..Heat-drying step is preferably devised with after coated, and heat-drying step is preferred for example: heating Heating device known in furnace, infrared lamp etc..
The step of forming 1 adhering agent layer is preferably formed as 50 μm of thickness or more and 250 μm of the 1st stickers below.This feelings Condition, the coating weight of the 1st adhesion agent composition can cooperate solid component concentration and the viscosity appropriate decision of row again of adhesion agent composition.
The step of obtaining 2 adhering agent layer is preferably the step of being coated with 2 adhesion agent composition on the 2nd stripping film.2nd The coating method of adhesion agent composition can be enumerated same such as above-mentioned coating method.
The step of forming 2 adhering agent layer is preferably formed as 5 μm of thickness or more and 75 μm of the 2nd stickers below.
In a surface side of substrate layer of the light transmittance up to 50% or more of wavelength 370nm, the step of being bonded 1 adhering agent layer, And in the step of another surface side of substrate layer is bonded 2 adhering agent layer, the 1st adhesion of fitting on each face of substrate layer respectively Oxidant layer and the 2nd adhering agent layer.
(application method of double-faced pressure-sensitive adhesive sheet)
The application method of double-faced pressure-sensitive adhesive sheet of the present invention is preferably when the 1st adhering agent layer of double-faced pressure-sensitive adhesive sheet is in semi-cured state Just it fits with adherend, then irradiates active energy beam and method that the 1st adhering agent layer is fully cured.Adherend also may be used With scale, such adherend can for example enumerate the Dicoration base material layer with decorative layer.
When double-faced pressure-sensitive adhesive sheet to be fitted in the Dicoration base material layer equipped with decorative layer, active energy beam system adheres from the 2nd Implement irradiation in oxidant layer side.Before irradiating active energy beam, because the 1st adhering agent layer is in semi-cured state, thus it can chase after The scale of track decorative layer and Dicoration base material interlayer.Through fitting double-faced pressure-sensitive adhesive sheet and after tracking scale, by keeping the 1st adhering agent layer sharp It is fully cured with active energy beam, just improves the cohesiveness of the 1st adhering agent layer, and promote the adherence to Dicoration base material layer.
Active energy beam can be enumerated: ultraviolet light, electron beam, luminous ray, X-ray, ion beam etc. can cooperate sticker The appropriate selection of row again of polymerization initiator contained in layer.Wherein, special just from the viewpoint of versatility, preferably ultraviolet light or electron beam Not preferred ultraviolet light.
The light source of ultraviolet light can be used for example: high-pressure mercury-vapor lamp, Cooper-Hewitt lamp, extra-high-pressure mercury vapour lamp, metal halid lamp, Carbon arc, xenon arc, electrodeless uv lamp etc..
Electron beam can be used from such as Ke Kelaofu-Wall and gulp down (Cockroft-Walton) type, all De Graff types (Van-de-Graaff type), resonance variable-pressure, insulating core transformer typ, linear type, high-frequency and high-voltage (Dynamitron) type, The electron beam that the various electron-beam accelerators such as high-frequency type release.
Preferably after the 1st adhering agent layer is fully cured, the 2nd adhering agent layer is just bonded adherend.2nd adhering agent layer is simultaneously It is necessarily the adhering agent layer with rear ability to cure, even if not irradiating active energy beam can still be bonded with adherend.I.e. the 2nd Adhering agent layer is the adhering agent layer of active energy beam non-curable.
The adherend for fitting in the 2nd adhering agent layer is preferably the optical components such as display device.Display device can be enumerated for example: Liquid crystal display device (liquid crystal display panel), plasm display device (plasma display panel), organic electroluminescent are aobvious Showing device (organic EL panel) etc..
(laminate)
The 1st mode > of <
The present invention also relates to the laminate of other layers of further lamination on above-mentioned double-faced pressure-sensitive adhesive sheet.Such laminate 1st mode can enumerate have above-mentioned double-faced pressure-sensitive adhesive sheet, on the 1st adhering agent layer the Dicoration base material layer of lamination and the 2nd adhesion The laminate of the display device of lamination in oxidant layer.Wherein, a part of Dicoration base material layer on a surface has decorative layer, and has There is the face of decorative layer to fit with the 1st adhering agent layer.
Fig. 2 is the outline for illustrating the composition of the laminate 200 formed using double-faced pressure-sensitive adhesive sheet of the present invention fitting adherend Cross-sectional view.As shown in Fig. 2, on the 1st adhering agent layer 12 lamination the Dicoration base material layer 20 with decorative layer 25, and it is viscous the 2nd In oxidant layer 14 lamination adherend 30.Herein, adherend 30 is preferably display device.Display device can for example be enumerated: liquid crystal Display device (liquid crystal display panel), plasm display device (plasma display panel), ORGANIC ELECTROLUMINESCENCE DISPLAYS dress Set (organic EL panel) etc..
< Dicoration base material layer >
The property that Dicoration base material layer of the invention also can have ultraviolet light not penetrate.In the present invention, make the 1st sticker When layer solidification, active energy beam can be irradiated from the 2nd adhering agent layer side.So the adherend of the 1st adhering agent layer of fitting also can be Ultraviolet light will not the person of penetrating, double-faced pressure-sensitive adhesive sheet of the invention can be used in the fitting of various adherends.
In laminate, Dicoration base material layer can also have multi-ply construction.When Dicoration base material layer has the case where multi-ply construction, dress Decorations substrate layer preferably has such as substrate resin layer and functional layer.
Functional layer can for example enumerate at least 1 layer selected among prime coat and hard conating.That is, Dicoration base material layer preferably wraps Contain: substrate resin layer and selected among prime coat and hard conating at least 1 layer.
< prime coat >
Prime coat is preferably the priming coat of substrate resin layer.By design prime coat, when use solvent type adhering agent layer etc. When, solvent can be influenced to inhibit caused by substrate resin layer in least limit.In addition, when substrate layer has substrate resin layer When with the multi-ply construction of prime coat, the thickness of substrate resin layer is greater than the thickness of prime coat, can area by such thickness is set as Both point.
The resin for constituting prime coat can for example enumerate epoxy resin.Epoxy resin is that single solution curing type or biliquid curing type are equal It can arbitrarily use.In addition, particularly preferably using water-soluble epoxy resin.Water-soluble epoxy resin can for example enumerate daiamid epoxy Resin etc..Polyamide Epoxy be by make such as two stretch second triamine, three stretch second tetramine etc it is poly- stretch alkane polyamines, with for example oneself The dicarboxylic acids of diacid etc, reacted and the polyamide polyamines that obtain, then react and can obtain with epichlorohydrin.
When forming the case where resin of prime coat is using water-soluble epoxy resin, further to promote coating, also The others water-soluble resin such as polyvinyl alcohol resin can be mixed.Polyvinyl alcohol resin except partly-hydrolysed polyvinyl alcohol, It, can also be for for example: carboxy-modified polyvinyl alcohol, acetoacetyl modified polyvinyl alcohol, hydroxyl first except fully saponified polyvinyl alcohol The polyvinyl alcohol resin of the modified mistakes such as base modified polyvinylalcohol, amino modified polyvinyl alcohol.
The resin for constituting prime coat is preferably used according to the state being dissolved in solvent.At this time used solvent it is preferable to use Water, but organic solvent also can be used.Organic solvent also can be used for example: benzene,toluene,xylene etc. is aromatic hydrocarbon；Acetone, first The ketones such as ethyl ketone, methylisobutylketone；The esters such as ethyl acetate, isobutyl acetate；The chlorinations such as methylene chloride, trichloro ethylene, chloroform Hydro carbons；The alcohols such as ethyl alcohol, 1- propyl alcohol, 2- propyl alcohol, n-butyl alcohol etc. general organic solvent.
< hard conating >
Hard conating is preferably the layer for improving decorating printing adaptive and being arranged.Furthermore the strong of laminate also can be improved in hard conating Degree, durability.
Hard conating preferably comprises the hard constituents for assigning hardness.Hard constituents can for example enumerate crosslinked polymer.It hands over Connection polymerization system can enumerate mono-functional monomers' condensate and multiple functional radical monomer polymerization body.Multiple functional radical monomer polymerization body is preferred It is the condensate of polymerizable monomer containing multiple functional radical monomer more than trifunctional base, further preferably more than tetrafunctional base more The condensate of the polymerizable monomer of functional group monomer.Such as more than trifunctional base multiple functional radical monomer and bifunctional monomer The copolymer etc. of mix monomer, also falls within and more preferably illustrates.In addition, so-called herein " monomer " also covers oligomer.
Monomeric species for that can obtain crosslinked polymer and can use are not particularly limited, and can preferably be illustrated such as acrylic acid Monomer etc..It can specifically enumerate: dipropylene glycol two (methyl) acrylate, 1,6-hexylene glycols two (methyl) acrylate, 3 the third two Alcohol two (methyl) acrylate, polyethylene glycol (weight average molecular weight 600) two (methyl) acrylate, epoxy pronane modification new penta 2 Alcohol two (methyl) acrylate, modified bisphenol A two (methyl) acrylate, Tricyclodecane Dimethanol two (methyl) acrylate, Difunctionality base (methyl) acrylate such as polyethylene glycol (weight average molecular weight 400) two (methyl) acrylate；Three (first of pentaerythrite Base) acrylate, trimethylolpropane tris (methyl) acrylate, trimethylolpropane ethyoxyl three (methyl) acrylate, Trifunctionals base (methyl) acrylate such as polyethers three (methyl) acrylate, glycerol propoxyl group three (methyl) acrylate；Season penta Tetrol four (methyl) acrylate, pentaerythrite ethyoxyl four (methyl) acrylate, two (trimethylolpropane) four (methyl) The modified dipentaerythritol five (methyl) acrylate of acrylate, propionic acid, dipentaerythritol monohydroxy five (methyl) acrylate, (methyl) acrylate more than the tetrafunctionals base such as dipentaerythritol six (methyl) acrylate.
The monomer or oligomer of organic compound with polymerism unsaturated group can be Thermocurable, also can be activity Energy ray-curable.
Hard conating can also contain flexibility ingredient.Flexibility ingredient can for example be enumerated: two (methyl) acrylic acid tristanes Hydroxyl methyl esters, ethylene-oxide-modified two (methyl) acrylate of Bisphenol F, bisphenol-A ethylene-oxide-modified two (methyl) acrylic acid Ester, ethylene-oxide-modified two (methyl) acrylate of fulminuric acid, polypropylene glycol two (methyl) acrylate, polyethylene glycol Difunctionality base (methyl) acrylate such as two (methyl) acrylate；Trimethylolpropane tris (methyl) acrylate, trimethyl Epoxy pronane modification three (methyl) acrylate of propane, ethylene-oxide-modified three (methyl) acrylate of trimethyl propane etc. Trifunctional base (methyl) acrylate；Urethane (methyl) acrylate, polyester (methyl) acrylate, polyethers (first Base) acrylate etc..
Furthermore hard conating can also contain inorganic particulate and/or organic filler.If containing inorganic particulate and/or organic filler, Just more preferably from the viewpoint of inhibition cure shrinkage.Inorganic particulate can for example be enumerated: silicon dioxide granule, TiO 2 particles, oxygen Change the inorganic oxide particles such as zirconium particle, aluminium oxide particles, stannic oxide particle, antimony pentaoxide particle, antimony trioxide particle.This Outside, organic filler can for example be enumerated: acrylic resin, polystyrene, polysiloxanes, melamine resin, benzoguanamine resin, The resin particles such as polytetrafluoroethylene (PTFE), cellulose acetate, polycarbonate, polyamide.
The case where using inorganic particulate, also can be used through implementing processed reactive inorganic oxide grain using coupling agent Son.The case where using organic filler, also can be used through implementing processed reactive organic oxide particle using coupling agent.It borrows By handling using coupling agent execution, the binding force between acrylic polymeric body can be improved.
Coupling agent can for example be enumerated: γ-aminocarbonyl propyl triethoxysilane, γ-aminocarbonyl propyl trimethoxy silane, γ- Epoxy propoxy propyl triethoxysilane, γ-glycidoxypropyltrime,hoxysilane, γ-mercapto propyl trimethoxy silicon Alkane, γ-aminocarbonyl propyl triethoxysilane, γ-aminocarbonyl propyl aluminium ethoxide etc..These can be used alone a kind, can also be used in combination Two or more.
The thickness of hard conating is not particularly limited, for example, preferably 0.5 μm or more, more preferable 1.0 μm or more, further it is excellent Select 2.0 μm or more.In addition, preferably 100 μm or less, more preferred 50 μm of the thickness of hard conating or less.
< decorative layer >
Decorative layer is set in the one side of Dicoration base material layer.Decorative layer can be the decorative printed layer of setting using printing. Printing process for constituting decorative printed layer can for example enumerate: intaglio printing, screen painting etc..Decorative layer can be outer frame-shaped The hiding decorative printed layer of electrode also can be the printed patterns of tool design.
Coating for constituting decorative printed layer is not particularly limited, and known coating can be used.Coating can for example be enumerated: Ultraviolet curable ink, Oxidation polymerization type ink etc..
Preferably 5 μm or more, more preferred 7 μm of the thickness of decorative layer or more, further preferred 10 μm or more.In addition, decoration Preferably 50 μm or less, more preferred 30 μm of thickness or less, further preferred 25 μm or less of layer.In addition, the thickness of decorative layer regards It needs also can relatively be thicker than 50 μm.This situation can track decorative layer and substrate by the thickness of the 1st adhering agent layer of appropriate adjustment The scale of interlayer.
The 2nd mode > of <
2nd mode of laminate can be enumerated in addition to the laminate of the 1st mode, further have the 3rd adhering agent layer with The laminate of surface coating.The laminate of 2nd mode further has the 3rd adhering agent layer and surface coating, in decoration base There is the 3rd adhering agent layer on material layer, and there is surface coating on the 3rd adhering agent layer.
Fig. 3 is the schematic sectional view of the composition of laminate 200 for the 2nd mode that illustrates.As shown in figure 3, in Dicoration base material layer On 20 lamination the 3rd adhering agent layer 40, and on the 3rd adhering agent layer 40 lamination surface coating 50.
Surface coating 50 can for example enumerate glass plate, resin layer.Glass plate can specifically be enumerated: soda-lime glass, alkali-free glass, The inorganic material of strengthened glass etc is constituted.Surface coating is preferably surface resin layer, and it is preferable to use by gathering to benzene for this situation Dioctyl phthalate second diester resin (PET resin), polycarbonate resin (PC resin), plexiglass (PMMA resin) The resin layer that equal transparent resins are constituted.The property that these surface resin layers also can have ultraviolet light not penetrate.
3rd adhering agent layer is preferably formed by the 3rd adhesion agent composition that contained principal component is matrix polymer.Matrix is poly- Object is closed to preferably comprise from acrylic polymeric body, rubber-based polymeric body, silicon systems condensate, urethanes system condensate and gather It is selected among ester system condensate at least one kind of.Wherein, matrix polymer preferably comprises poly- from acrylic polymeric body, rubber series It selects at least one kind of among fit and silicon systems condensate, is more preferably selected among acrylic polymeric body and rubber-based polymeric body That selects is at least one kind of, further preferably acrylic polymeric body.
As long as the thickness system of the 3rd adhering agent layer is up to 5 μm or more, preferably 10 μm or more.In addition, the 3rd adhering agent layer As long as 75 μm of thickness system or less can, preferably 60 μm or less, more preferred 50 μm or less.
(manufacturing method of laminate)
The present invention also relates to the manufacturing method of laminate.The manufacturing method of laminate of the invention include: make it is above-mentioned two-sided 1st adhering agent layer of adhesive sheet is contacted with the decorative layer of Dicoration base material layer (it is that a part on a surface has decorative layer) The face of side implements active energy beam irradiation from the 2nd adhering agent layer side in this case and the 1st adhering agent layer is fully cured Step；And the step of being bonded display device on the 2nd adhering agent layer.Being contacted with Dicoration base material layer in the 1st adhering agent layer, (it is A part on one surface has decorative layer) decorative layer side one side the step of in, the 1st adhering agent layer is preferably in semi-solid preparation shape State.
Active energy beam can be enumerated: above-mentioned energy-ray, preferably ultraviolet light or electron beam, particularly preferred ultraviolet light.
The preferred integral luminous flux of ultraviolet irradiation output becomes 100mJ/cm2Above and 10000mJ/cm2Below, more excellent Select 500mJ/cm2Above and 5000mJ/cm2Below.
In the manufacturing method of laminate, before irradiating active energy beam, because of the 1st adhering agent layer of double-faced pressure-sensitive adhesive sheet In semi-cured state, even if thus adherend there are order difference part, but still traceable bumps of adhering agent layer.Fitting adhesion according to this Piece simultaneously makes after tracking bumps, and the 1st adhering agent layer is fully cured by using active energy beam, just improves the 1st adhering agent layer Cohesiveness, promoted to the adherence of adherend.
In the present invention, when the 1st adhering agent layer is fully cured using active energy beam, applied from the 2nd adhering agent layer side The irradiation of row active energy beam.Active energy beam irradiation is implemented by from the 2nd adhering agent layer side, even if by the 1st sticker When layer fits in the Dicoration base material layer with decorative layer, still the 1st adhering agent layer can be made evenly and completely to solidify.It will not occur whereby Occur interfering the place of active energy beam irradiation because of decorative layer.
After the 1st adhering agent layer is fully cured, adherend preferably is bonded on the 2nd adhering agent layer.2nd adhering agent layer has no Necessity is the adhering agent layer with rear ability to cure, even if not irradiating active energy beam can still be bonded with adherend.In addition, The adherend being bonded on 2nd adhering agent layer is preferably the optical components such as display device.
When laminate is in addition to the laminate of the 1st mode, further has the 3rd adhering agent layer and surface coating, The 3rd adhering agent layer is bonded on surface coating, fitting has the Dicoration base material of decorative layer further on the 3rd adhering agent layer Layer.Roller fitting is preferably implemented when fitting.Dicoration base material layer is fitted in the 1st adhering agent layer side of double-faced pressure-sensitive adhesive sheet.
[embodiment]
Embodiment and comparative example are enumerated below, are more particularly described for feature of present invention.Material shown in following embodiment Material, usage amount, ratio, process content, processing sequence etc. can suitably change under the premise of not escaping present subject matter.So this Invention scope should not be construed as circumscribed due to concrete example as shown below.
(embodiment 1)
It is viscous using applicator coating the 1st on the single side of partition A (prince F-TEX corporation, 100RL-07V (10.5)) Agent (New Tac Kasei corporation, DC124), in 100 DEG C of progress drying in 2 minutes, and formed 100 μm of thickness the 1st adhesion Oxidant layer.Bonding, PET film (Toray system,75 μm of U483, thickness) one side on fitting the 1st adhesion Oxidant layer.
On the single side of partition B (prince F-TEX corporation, 75RL-07V (6.5)), the 2nd adhesion of applicator coating is utilized Agent composition (New Tac Kasei corporation, SA151), in 100 DEG C of progress drying in 2 minutes, and formed 25 μm of thickness the 2nd Adhering agent layer.Bonding is bonded the 2nd adhering agent layer on the face of the opposite side for the PET film for being bonded the 1st adhering agent layer.It obtains according to this Obtain the double-faced pressure-sensitive adhesive sheet of embodiment 1.The light transmittance of the wavelength 370nm of base material film (PET film) is as shown in table 1.
(embodiment 2)
In addition to the NA021 that the SA151 of the 2nd adhesion agent composition is changed to New Tac Kasei corporation, remaining is According to making double-faced pressure-sensitive adhesive sheet similarly to Example 1.
(comparative example 1)
In addition to the PET film of base material film is changed to SRF film, remaining according to obtaining double-sided adhesive similarly to Example 1 Piece.The light transmittance of the wavelength 370nm of base material film is as shown in table 1.
(comparative example 2)
1st adhesion agent composition is changed to the DC126 of New Tac Kasei corporation, and thickness is changed to such as table 1 It is shown.Except not across base material film, except so that the 1st adhering agent layer and the 2nd adhering agent layer is fitted, remaining according to Embodiment 1 similarly obtains double-faced pressure-sensitive adhesive sheet.
(comparative example 3)
Use the DC126 of New Tac Kasei corporation as the 1st adhesion agent composition, obtains the two-sided adhesion of single layer Piece.
(comparative example 4)
1st adhesion agent composition is changed to the DC126 of New Tac Kasei corporation, and thickness is changed into such as table 1, And be changed to the 2nd adhesion agent composition except the DC121 of New Tac Kasei corporation, remaining is according to same with embodiment 1 Obtain double-faced pressure-sensitive adhesive sheet to sample.
(comparative example 5)
Except the 1st adhesion agent composition use New Tac Kasei corporation SA037, and by thickness change as table 1 it Outside, remaining is according to the double-faced pressure-sensitive adhesive sheet for obtaining single layer in the same manner as comparative example 3.
(comparative example 6)
Except the 1st adhesion agent composition use New Tac Kasei corporation NA017, and by thickness change as table 1 it Outside, remaining is according to the double-faced pressure-sensitive adhesive sheet for obtaining single layer in the same manner as comparative example 3.
(comparative example 7)
Except the 1st adhesion agent composition use New Tac Kasei corporation SA034, and by thickness change as table 1 it Outside, remaining obtains double-faced pressure-sensitive adhesive sheet according in the same manner as comparative example 4.
(evaluation)
(ultraviolet light penetrance)
The ultraviolet light penetrance of substrate layer uses UV, visible light sub-ray spectrometer (pattern: Solidspec3700, Shimadzu system Make institute's corporation) measurement.Specifically measure the spectrophotometric light transmittance of wavelength 370nm.
(resistance to foaminess (resistance to ease gas))
For gas chemical company of Mitsubishi PC (polycarbonate resin) and PMMA (plexiglass) Co-extruded films (trade name: MR58) implement screen painting in the side PC, form decorative printed layer.The thickness for decorating printing layer is 20 μ m。
Secondly, the obtained double-faced pressure-sensitive adhesive sheet of Examples and Comparative Examples is cut to 55mm × 80mm size, partition A is torn, Constitute the decorative printed layer side state that the 1st adhering agent layer can be fitted in above-mentioned co-extruded films (MR58).
Then, tear partition B, the 2nd adhering agent layer fitted in into glass plate, in 40 DEG C, 0.5MPa, apply under the conditions of 30 minutes Row autoclave deaeration processing.Obtained laminate is placed 24 hours under 85 DEG C, 0~3% environment of relative humidity according to this, through such After endurance test, the laminate from the co-extruded films surface side of PC/PMMA, according to the execution of following evaluation criteria, whether there is or not gassings Evaluation.
Zero: laminate centre (region away from decorative layer edge 10mm or more) does not have bubble.
△: though there are bubbles in laminate centre, belong to less than 200 μm of the bubble of diameter.
×: find diameter up to 200 μm or more of larger bubble in laminate centre.
(scale traceability)
According to method same as resistance to foaminess evaluation method, laminate is made, and is applied according to method similar to the above After row deaeration processing and endurance test, the laminate from the co-extruded films surface side of PC/PMMA, for outline border printed perimeter (region including decorative layer and away from the less than 10mm in decorative layer edge) whether there is or not gassing (scale traceability), according to following Evaluation criteria implements evaluation.
Zero: outline border printed perimeter does not have bubble.
△: though outline border printing corner portion at gassing, at the periphery of long side and short side then there is no Bubble.
×: there is bubble in the corner of outline border printing, the periphery on two sides.
[table 1]
Learn that the gas of resistance to ease and the scale traceability of the obtained double-faced pressure-sensitive adhesive sheet of embodiment are excellent.On the other hand, compare The obtained double-faced pressure-sensitive adhesive sheet of example simultaneously cannot be considered in terms of resistance to ease gas and scale traceability.
Using the obtained double-faced pressure-sensitive adhesive sheet of embodiment, laminate can be also made.By the 1st adhesion coating side of double-faced pressure-sensitive adhesive sheet Stripping film is torn, and is fitted on the Dicoration base material layer with decorative layer, then, tears the stripping film of the 2nd adhering agent layer side, then apply Row roller fits in display device.
[symbol description]
10 substrate layers
12 the 1st adhering agent layers
14 the 2nd adhering agent layers
20 Dicoration base material layers
25 decorative layers
30 adherends
40 the 3rd adhering agent layers
50 surface coatings
100 double-faced pressure-sensitive adhesive sheets
200 laminates.

Claims (8)

1. a kind of double-faced pressure-sensitive adhesive sheet, comprising:
Substrate layer, the light transmittance of the substrate layer of wavelength 370nm is up to 50% or more；
1st adhering agent layer is set to a surface side of the substrate layer, and can solidify after being bonded；And
2nd adhering agent layer is set to another surface side of the substrate layer, and thickness is 5 μm or more and 75 μm or less.
2. double-faced pressure-sensitive adhesive sheet according to claim 1, wherein the 1st adhering agent layer is active energy ray curing Ability.
3. double-faced pressure-sensitive adhesive sheet according to claim 1 or 2, wherein the thickness of the 1st adhering agent layer be 50 μm or more and 250 μm or less.
4. double-faced pressure-sensitive adhesive sheet according to any one of claim 1 to 3, wherein the 1st adhering agent layer fits in a table A part on face has the Dicoration base material layer of decorative layer.
5. double-faced pressure-sensitive adhesive sheet according to any one of claim 1 to 4, wherein the 2nd adhering agent layer fits in display Device.
6. a kind of laminate, has: double-faced pressure-sensitive adhesive sheet described in any one of claims 1 to 5, in the 1st adhering agent layer The Dicoration base material layer of upper lamination and on the 2nd adhering agent layer lamination display device,
The a part of the Dicoration base material layer on a surface has decorative layer, and the face and the described 1st with the decorative layer Adhering agent layer fitting.
7. laminate according to claim 6 further has the 3rd adhering agent layer and surface coating；
There is the 3rd adhering agent layer on the Dicoration base material layer, and on the 3rd adhering agent layer there is the surface to cover Cap rock.
8. a kind of manufacturing method of laminate, comprising: make the described of double-faced pressure-sensitive adhesive sheet described in any one of claims 1 to 5 1st adhering agent layer is contacted with Dicoration base material layer on the face of decorative layer side, and a part of Dicoration base material layer on a surface With decorative layer, active energy beam is irradiated from the 2nd adhering agent layer side in this case, and makes the 1st adhering agent layer The step of being fully cured；And
In the step of being bonded display device on the 2nd adhering agent layer.
CN201780025807.2A 2016-04-26 2017-04-25 Double-sided adhesive sheet and laminate Expired - Fee Related CN109072021B (en)

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